A research poll included 1679 randomly selected adults who were asked whether "global warming is a problem that requires immediate government action." Results showed that 956 of those surveyed indicated that immediate government action is required. A news reporter wants to determine whether these survey results constitute strong evidence that the majority (more than 50%) of people believe that immediate government action is required. Complete parts (a) through ( below. a. What is the best estimate of the proportion of adults who believe that immediate government action is required? The best estimate is (Round to three decimal places as needed.) b. Construct a 95% confidence interval estimate of the proportion of adults believing that immediate government action is required.